Changes

A few notes:

* A noun type's <code>suggest</code> function typically returns an empty array when it intends to make asynchronous suggestions, but it can return one or more suggestions synchronously if it has them available.

* Because the work being done to generate asynchronous suggestions is generally somewhat expensive, and because a noun type's <code>suggest</code> function may be called for every keystroke the user makes, you should probably consider implementing a delay before starting the work and/or caching the work at some level. Ubiquity currently leaves this up to each noun type individually.